Help ID this worm and his friends

[Ross]

Hey

I'm having a bit of a hard time identifying these few items living in my tank
Any insight would be of great assistance.

Item 1
These inch to 2 inch long clear spiked threads are attaching themselves around the tank in all levels of light and flow.
http://farm3.static.flickr.com/2704/4156023319_3dd14f22d5_o.jpg

Item 2
There are several of these worms in the live rock. They go from one hole to another and from time to time you can see stuff moving inside them. They are about a mm in diameter and are round.
This pic http://farm3.static.flickr.com/2592/4156023243_b9102a5882_o.jpg it is empty.
This pic, it is not. Note the yellow stuff moving down the tube.
http://farm3.static.flickr.com/2612/4156784868_0f36f219fa_o.jpg

Item 3
Is to the right of center. It's a small purple flower shaped coral?
Its rather small, but they seem to be spreading and i dont know if I should pull them before they spread much more.
http://farm3.static.flickr.com/2750/4156023369_2473434f28_o.jpg

Item 4
Is about the size of a pea.
http://farm3.static.flickr.com/2651/4156784936_f8a8c42a4d_o.jpg


Thanks

[muck]

1. http://www.melevsreef.com/id/digitate_hydroid.html

2. http://www.melevsreef.com/id/peanut_worm.html

3. Looks like Clavularia sp. (Clove Polyps)

4. Could be some sort of tunicate?

[ScubaSteve]

I can't quite make out pic #4 but they almost look like a colony of tunicates. If it is a bunch of indiviual "chambers" with two vents in each then it is likely a tunicate. Does it look kinda like this?

http://images.art.com/images/-/Michael-Aw/Royal-Blue-Tunicate-Rhopalaea-Sp-West-Nusa-Tenggara-Indonesia--C10255325.jpeg

If got small, purple individual tunicates in my tank. Harmless and cool.

[ScubaSteve]

Oh, forgot to mention, could also be a sponge...

[bvlester]

Pic#4
They are sea squirts I have some in my tank as well they come in a bunch of colors.

[Myka]

1. Digitate hydroid
2. Peanut worm
3. Clove polyp
4. Tunicate or sponge

[Ross]

Thanks everyone!

[kien]

you need to email your picture of the peanut worm to Melev because yours is WAY better than his! :biggrin:

[gobytron]

I've never seen a peanut worm go from hole to hole?
Peanut worms were all I had for a few months on some fresh caribbean LR and they never did more than opened their mouths (like a small flower)...

They weren't clear either, you could not see into them at all, they were more opaque like palys...


That looks like something very different than a peanut worm to me

Do you have any pics of them with their mouths open?

[Ross]

That looks like something very different than a peanut worm to me

Do you have any pics of them with their mouths open?


All I ever manage to catch of these worms is the hole to hole view.
I've seen similar looking ones going from a rock into the sand a few inches away and digging around in the sand for along time, but never seen them extend or retract.
They typcially are retracted in the morning, and come out later in the day.

[gobytron]

excerpt taken from http://en.wikipedia.org/wiki/Sipuncula

The most recognizable part of Sipunculan worms is their mouth, which is surrounded by a mass of 18 - 24 tentacles, all of which may be inverted into the body.

Tough to say without seeing the mouth...
There are many different species of this worm though, so one being more motile than another is definitely possible.

[bvlester]

I have peanut worms also. I have seen one worm very much like this only once going from hole to hole, I am not convinced that it was a peanut worm either. It could be though. Now that I have a macro lens for my camera if I see it again I will be taking a pic of it.

Bill